Ultra‐Wide Modulation and Reversible Reconfiguration of a Flexible Organic Crystalline Optical Waveguide Between 645 and 731 nm DOI
Quan‐Liang Chen,

Baolei Tang,

Kaiqi Ye

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 20, 2024

Abstract Flexible organic crystalline optical waveguides, which deliver input or self‐emit light through various dynamic crystals, have attracted increasing attention in the past decade. However, modulation of waveguide output relies on chemical design and substituent modification, being time‐consuming laborious. Here we report an elastic crystal that displays long‐distance transduction up to 2.0 cm ultra‐wide waveguides between red (645 nm) near infrared (731 both pristine elastically bent states based a pre‐designed self‐absorption effect. The flexible can be precisely reversibly reconfigured by controlling irradiation point. In addition, deep‐red amplified spontaneous emission (ASE) is able transduce 5.0 mm with ultra‐low loss coefficient 0.093 dB/mm has been attained. To best our knowledge, this first ASE waveguides. present study not only provides simple yet effective strategy remarkably modulate but also demonstrates superiority lasing over normal as communication elements.

Language: Английский

The Use of Photocycloaddition Reactions to Drive Mechanical Motions Resembling Humanoid Movements DOI
Yong Wang, Qiaoqiao Zhang, Qi Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)

Published: June 18, 2024

Abstract With the aim of producing a photomechanical material for incorporation in soft microrobots, one‐dimensional diene coordination polymer (CP) [Cd(F‐bpeb)(3‐CBA) 2 ] n ( CP1 , F‐bpeb=4,4′‐((1 E ,1′ )‐(2,5‐difluoro‐1,4‐phenylene)bis(ethene‐2,1‐diyl))dipyridine, 3‐HCBA=3‐chlorobenzoic acid) was synthesized and characterized. Irradiation with ultraviolet (UV) or visible light causes [2+2] photocycloaddition reactions resulting introduction crystal strain which triggers various types movements. Composite films ‐PVA (SC) fabricated by dispersing crystals into polyvinyl alcohol (PVA) solution allow amplification movement so that film strips exhibit fast flexible curling upon photoirradiation. The composite may be cut long rectangular folded to simulate microrobots variety fast, continuous movements resembling human performing gymnastic exercises.

Language: Английский

Citations

7
Flexible Organic Molecular Single Crystal-Based Triboelectric Device as a Self-Powered Tactile Sensor DOI
Parvati Marandi,

Dalip Saini,

Kiran Arora

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(38), P. 26178 - 26186

Published: Sept. 16, 2024

Triboelectric nanogenerators (TENGs) have proven to be effective at converting mechanical energy into electrical power, making them a viable technology for operating self-powered electronic devices used in medical diagnostics and environmental monitoring. In the present study, we demonstrate utility of flexible single crystals an organic compound fabrication TENG as tactile sensor. Triboelectrification was attained result surface functionalization with positively negatively charged moieties, viz. Zn

Language: Английский

Citations

6
Surface coating induced room-temperature phosphorescence in flexible organic single crystals DOI Creative Commons
Prodipta Samadder, Khalid Naim,

Subash Chandra Sahoo

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(24), P. 9258 - 9265

Published: Jan. 1, 2024

A simple and facile surface coating protocol imparts visual room-temperature phosphorescence to flexible organic single crystals, allows their application in colour-tunable optical waveguiding anti-counterfeiting.

Language: Английский

Citations

5
Photo‐triggered Phase Transition of Crystals and Photoactuation DOI
Yuki Hagiwara, Akifumi Takanabe, Toru Asahi

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(40)

Published: May 16, 2024

Photo-triggered phase transition is a new type of in which photochromic crystal with thermal transforms into an identical high-temperature temperature region lower than the upon light irradiation. Here, we report second that exhibits photo-triggered transition, thereby demonstrating general phenomenon occurs crystals. When chiral salicylidenephenylethylamine was irradiated ultraviolet (UV) light, occurred range -30 to -10 °C. The induced by local stress due trans-keto molecules produced photoisomerization near surface. Crystal cantilevers exhibited stepwise bending combination and photoisomerization. Alternate irradiation UV visible achieved locomotion single crystals driven repeated bending. Finally, detailed comparison non-photo-triggered revealed sufficient molecular conformation change affordable voids, smooth photoisomerization, most likely arrangement are required for inducing transition.

Language: Английский

Citations

4
Exploring the structure and reactivity of organic crystals: a combined crystallographic and quantum chemical analysis of a 1,5-benzodiazepine-based heterocycle DOI

Amel Haouas

Chemical Papers, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 22, 2025

Language: Английский

Citations

0
Stress and Light-Induced Dual Mechanical Properties of Two 1,3-Dicyanostilbene Derivative Crystals DOI

Sayak Nag,

Biswajit Bhattacharya, Franziska Emmerling

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Language: Английский

Citations

0
Photomechanical properties in metal–organic crystals DOI
Samim Khan, Mohammad Hedayetullah Mir

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(59), P. 7555 - 7565

Published: Jan. 1, 2024

This feature article aims to provide an authoritative view understand the chemical aspects of photosalient behavior metal–organic crystals for further progress in this field photoactuating smart materials.

Language: Английский

Citations

3
Crystal Engineering-Driven Sunlight Responsiveness and Flexible Waveguide Transmission DOI
Jiang Peng,

Yuheng Zhao,

Jing Yang

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(28), P. 7335 - 7341

Published: July 10, 2024

Here, a barbituric acid derivative containing pyrene rings (DPPT) was successfully synthesized, and two types of crystals were prepared by using crystal engineering methods. Orange sheet-like (DPPT-O, observed in visible light), DCM/CH3OH solution, exhibited brittleness weak fluorescence emission, along with sunlight-induced bending fracturing. Red needle-like (DPPT-R, also synthesized DCM/CH3CN demonstrated elastic properties, strong excellent optical waveguide performance (with an loss coefficient 0.23-0.30 dB mm-1). Single-crystal data analysis revealed that the stacking arrangement molecules critically influenced elasticity crystals, while reaction cavity size regulated photomechanical properties crystals. This study achieved effective control over sunlight responsiveness flexible transmission for first time, providing innovative insights application homogeneous organic polycrystalline molecular this field.

Language: Английский

Citations

3
The Use of Photocycloaddition Reactions to Drive Mechanical Motions Resembling Humanoid Movements DOI
Yong Wang, Qiaoqiao Zhang, Qi Liu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(38)

Published: June 18, 2024

Abstract With the aim of producing a photomechanical material for incorporation in soft microrobots, one‐dimensional diene coordination polymer (CP) [Cd(F‐bpeb)(3‐CBA) 2 ] n ( CP1 , F‐bpeb=4,4′‐((1 E ,1′ )‐(2,5‐difluoro‐1,4‐phenylene)bis(ethene‐2,1‐diyl))dipyridine, 3‐HCBA=3‐chlorobenzoic acid) was synthesized and characterized. Irradiation with ultraviolet (UV) or visible light causes [2+2] photocycloaddition reactions resulting introduction crystal strain which triggers various types movements. Composite films ‐PVA (SC) fabricated by dispersing crystals into polyvinyl alcohol (PVA) solution allow amplification movement so that film strips exhibit fast flexible curling upon photoirradiation. The composite may be cut long rectangular folded to simulate microrobots variety fast, continuous movements resembling human performing gymnastic exercises.

Language: Английский

Citations

2
Advancing Light‐Driven Elastic Crystals: Toward Sustainable Applications in Robotic Arms, Information Identification, and Optical Waveguides DOI
Jiang Peng, Jing Yang,

Yuheng Zhao

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(32)

Published: Aug. 22, 2024

Abstract An innovative elastic crystal based on barbituric acid derivatives ( HBDT ), which uniquely alters its fluorescence intensity under light exposure is developed. This exhibits significant bending 365 nm, 450 white light, and sunlight while retaining elasticity post‐bending. The photomechanical effect of this driven by intermolecular [2+2] cycloaddition reactions, resulting in light‐activated enhancement. These properties open new avenues for applications robotic arms, information identification, optical waveguides, presenting a groundbreaking approach sustainable flexible material science technology.

Language: Английский

Citations

2